Digital Communication Test Questions

1.

Interleaving process permits a burst of B bits, with l as consecutive code bits and t errors when

A. B ≤ 2tl

B. B ≥ tl

C. B ≤ tl/2

D. B ≤ tl

A. EX-OR logic

B. AND logic

C. OR logic

D. None of the above

A. Diverge upward when a bit is 0 and diverge downward when the bit is 1

B. Diverge downward when a bit is 0 and diverge upward when the bit is 1

C. Diverge left when a bit is 0 and diverge right when the bit is 1

D. Diverge right when a bit is 0 and diverge left when the bit is 1

A. Sum of code words is also a code word

B. All-zero code word is a code word

C. Minimum hamming distance between two code words is equal to weight of any non zero code word

D. All of the above

A. Pi graph

B. Matrix

C. Tanner graph

D. None of the above